slime mold
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Slime Mold. Koshi high school of Fukui Erina Morita Misako Kato Yuina Tanikawa. First. We found that slime mold may have negative geotaxis from the results of our seniors’ experiment . We want to research slime mold because we were interested in it. What is Slime mold?. - PowerPoint PPT PresentationTRANSCRIPT
Slime Mold
Koshi high school of Fukui Erina MoritaMisako Kato
Yuina Tanikawa
FirstWe found that slime mold may have
negative geotaxis from the results of our
seniors’ experiment.
We want to research slime mold because
we were interested in it.
What is Slime mold?
True slime mold
Cellularity slime moldCellular slime mold
Underside of rotten trees ・logs
Fallen leaves
Slime mold
粘菌とは…?This is Slime mold!!
FigureExploratory experiment
Outcome
1day 2day 3day 4day 5day90%
91%
92%
93%
94%
95%
96%
97%
98%
99%
100%
TopBottom
Experiment Ⅰ: about Existence of geotaxis
Result12.5% of slime molds showed that
they didn’t have negative gravitaxis. 87.5% of slime molds showed that they have negative gravitaxis.
Consideration
Slime molds mostly moved upward.
It is thought that they have negative gravitaxis.
Experiment : Ⅱ About migration pathway
After 6 hoursrotated 90 °or 180°
Result
Use bigger petri dish
Consideration
It is thought that they have a property to avoid going over the same path.
They didn’t go over their path from before.
The Whole Consideration
They leave the traces such as chemical substances on their path.
Avoid the path where they cannot expect to get food. In doing so...
The difference in how the slime molds move may depend on the amount of food and the strength of stimulus ( gravity, light, and chemical substance) .
Future QuestionsWhat is the material left behind after the slime mold passes?
Why does the slime mold move to avoid it?
How does the slime mold move when signals (gravity, light, and chemical substance) are changed?
Thank you for
listening!!